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World leaders, guerrillas, royalty and a Hollywood star will attend Fidel Castro's funeral

Just as interesting is the list of leaders who have chosen not to attend

Havana, Cuba (CNN)Fidel Castro's funeral will bring together an unlikely mix of world leaders, royalty, Marxist guerillas and Hollywood actors.

So, who's coming?

The official guest list goes on for 20 pages, with a varied group of VIPs such as former Spanish King Juan Carlos I, a vice president of the North Korean worker's party and left-leaning actor Danny Glover.

Castro's wife and children, whose existence for years was a state secret, could make a rare appearance. Castro's long-estranged sister Juanita Castro said she would not be leaving exile in Miami to attend the funeral.

Nearly every Latin American head of state will be on hand, though.

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The arrival of left-leaning presidents of Bolivia, Ecuador, Nicaragua and Venezuela is no surprise and in fact speaks to how much the world has changed since Fidel Castro took power in 1959.

Shortly after the Cuban revolution, every country in the Western Hemisphere except Mexico broke relations with Cuba, alarmed at Castro's growing alliance with the Soviet Union.

But thanks to a recent boom in leftist governments -- some Castro helped to install, like that of Nicaragua's Daniel Ortega -- the region is now chock-full of Cuba allies.

Photos:Cuba remembers Castro

Workers place a plaque with the word "Fidel" on the tomb holding the remains of former Cuban President Fidel Castro in the Cementerio Santa Ifigenia where he was buried, Sunday, December 4, in Santiago de Cuba. Cubans are honoring his life this week.

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Photos:Cuba remembers Castro

A Cuban government supporter cries during Castro's funeral on December 4.

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Fidel Castro's funeral in Santiago de Cuba on December 4.

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Fidel Castro's ashes pass on the streets going to the cemetery in Santiago de Cuba on December 4.

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Cuban government supporters chant for Fidel Castro near the entrance of the cemetery on December 4.

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Cuban government supporters chant for Fidel Castro near the entrance of the cemetery on December 4.

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The ashes of the former Cuban leader pass below an iconic revolutionary banner as the cortège makes the final movement to the cemetery on December 4.

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Cubans await for the passage of the urn containing the ashes of Fidel Castro on December 4.

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Cubans await the passage of Castro's ashes from Revolution Square in Santiago, Cuba on December 4.

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Cubans wait on the side of the road for the caravan carrying the ashes on December 3.

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A man on horseback Saturday, December 3, waits on the side of the road for the caravan carrying the ashes of former Cuban President Fidel Castro, who died at age 90 on November 25.

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Cubans see the ashes of Fidel Castro being carried by a special convoy through the city of Holguin on Saturday, December 3.

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A soldier reacts after the ashes of longtime Cuban leader Fidel Castro passed through Santa Clara, Cuba, on Thursday, December 1.

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People watch from a rooftop as Castro's remains pass by in Santa Clara on December 1. Castro's ashes are on a four-day journey from Havana to Santiago de Cuba.

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The trailer of a military jeep carries the flag-draped coffin containing Castro's ashes.

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A car adorned with messages to Castro sits parked on a street in La Esperanza, Cuba, on Wednesday, November 30.

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Castro's ashes are driven through Revolution Square in Havana on November 30.

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People line up to pay their final respects at a Castro memorial in Santa Clara on November 30. The theater marquee reads "Thank you Fidel" in Spanish.

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Schoolchildren react as a helicopter passes overhead in Cardenas, Cuba, on November 30.

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Women comfort one another after watching Castro's remains pass by in Havana on November 30.

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Ministry of Interior troops hold a Cuban flag as they wait for the military caravan transporting Castro's remains on November 30.

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A girl in Havana holds a sign that reads "I am Cuba. I am Fidel. I am revolution" on Tuesday, November 29.

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People in Havana participate in a massive rally at Revolution Square on November 29.

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Cuban President Raul Castro, left, Nicaraguan President Daniel Ortega, center, and Ecuadorian President Rafael Correa, far right, take part in the Revolution Square rally on November 29.

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Navy cadets join the crowd during the rally on November 29.

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Laurenso, an 80-year-old army veteran, pays his respects in Revolution Square on November 29.

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A woman stretches her hand toward a picture of Castro at a memorial in Guanabacoa, on the outskirts of Havana, on November 29.

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Photos:Cuba remembers Castro

An honor guard fires a 21-gun salute to mark the start of services paying tribute to Castro in Havana on Monday, November 28.

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People gather at Revolution Square to pay tribute to Castro on Monday, November 28.

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A man in Havana pays tribute to Castro on November 28.

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Thousands wait in line at Revolution Square on November 28.

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Cubans hold photos of Castro as they wait to pay their respects at Revolution Square on November 28.

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People pay their last respects to Castro in Revolution Square.

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Cuban soldiers march near Revolution Square on November 28.

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A woman dries her tears as she waits to pay her respects in Havana on November 28.

Students sign a book of condolences and a loyalty oath for Fidel Castro at a community center in Havana on November 28.

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Photos:Cuba remembers Castro

Workers hang a giant banner of a young Castro from the Cuban National Library in Havana on Sunday, November 27.

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Many observers will be watching for the interaction between Venezuelan President Nicolas Maduro and Raul Castro. Since late Venezuelan President Hugo Chavez began to copy Cuba's socialist and fiercely anti-US government style, Cuba and Venezuela have all but melded into one country.

But with oil prices plummeting, Venezuela has been forced to cut precious oil subsidies to Cuba, leading many to wonder if the Venezuela-Cuba love affair is on the rocks.

Both Colombian government officials and their longtime adversaries the FARC guerrillas are attending. That speaks volumes about how Cuba has changed its role in world affairs.

For decades, Cuba supported the Marxist guerrillas in their attempt to topple Colombia's government, earning the island until 2015 a spot on the US State Department's list of countries that support terrorism.

Obama did not meet with Castro during his landmark trip and the former Cuban leader later attacked him for his Cuba policy.

The US Embassy in Havana is one of the few diplomatic missions in the Cuban capital that has not lowered its flag to half-staff to mark Castro's death.

Photos:Former Cuban leader Fidel Castro dies

Fidel Castro exhales cigar smoke during a March 1985 interview at his presidential palace in Havana, Cuba. Castro died at age 90 on November 25, 2016, Cuban state media reported. Click through to see more photos from the life of the controversial Cuban leader who ruled for nearly half a century:

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Photos:Former Cuban leader Fidel Castro dies

A portrait of Castro in New York in 1955. He was in exile after being released as part of a general amnesty for political prisoners in Cuba. Two years earlier, he and about 150 others staged an unsuccessful attempt to overthrow the regime of Fulgencio Batista.

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Photos:Former Cuban leader Fidel Castro dies

Castro with Argentine revolutionary Che Guevara during the early days of their guerrilla campaign in Cuba's Sierra Maestra mountains. Guevara, Castro and Castro's brother Raul organized a group of Cuban exiles that returned to Cuba in December 1956 and waged a guerrilla war against government troops.

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Photos:Former Cuban leader Fidel Castro dies

Castro and his revolutionaries hold up their rifles in January 1959 after overthrowing Batista.

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Crowds cheer Castro on his victorious march into Havana in 1959.

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Surrounded by rebels who came with him from the mountains, Castro gives an all-night speech.

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Castro, left, became Cuba's prime minister in February 1959. His brother Raul, right, was commander in chief of the armed forces.

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During a visit to New York in 1959, Fidel Castro spends time with a group of children.

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American talk-show host Ed Sullivan interviews Castro on a taped segment in 1959.

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Castro shakes hands with US Vice President Richard Nixon during a reception in Washington in 1959.

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Castro addresses the UN General Assembly in September 1960.

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Castro jumps from a tank in April 1961 as he arrives at Giron, Cuba, near the Bay of Pigs. That month, a group of about 1,300 Cuban exiles, armed with US weapons, made an unsuccessful attempt to overthrow Castro.

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Photos:Former Cuban leader Fidel Castro dies

Castro announces general mobilization after the announcement of the Cuban blockade by President John F Kennedy in October 1962.

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Castro raises arms with Soviet leader Nikita Khrushchev during a four-week visit to Moscow in May 1963.

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Castro in July 1964.

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Castro plays baseball in 1964.

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Castro addresses thousands of Cubans in Havana in 1968.

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In 1977, Castro uses a map as he describes the 1961 Bay of Pigs invasion to ABC correspondent Barbara Walters.

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Iraq's Saddam Hussein, center, with the Castro brothers during a visit to Cuba in January 1979.

Castro meets with Pope John Paul II on an airport tarmac in Havana in January 1998. It was the first papal visit to Cuba.

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Castro puts his arm around South African President Nelson Mandela in May 1998 with Italian Prime Minister Romano Prodi, left, and Brazilian President Fernando Henrique Cardoso. They were in Geneva, Switzerland, for a conference of the World Trade Organization.

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Photos:Former Cuban leader Fidel Castro dies

Castro welcomes Russian President Vladimir Putin to Cuba in December 2000. Putin was the first Russian President to visit Cuba since the fall of the Berlin Wall.

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Castro is helped by aides after he appeared to faint while giving a speech in Cotorro, Cuba, in June 2001. He returned to the podium less than 10 minutes later to assure the audience he was fine and that he just needed to get some sleep.

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In July 2001, Castro talks with Elian Gonzalez, the young boy who was the focus of a bitter international custody dispute a couple of years earlier.

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Castro and former US President Jimmy Carter listen to the US national anthem after Carter arrived in Havana for a visit in May 2002.

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Photos:Former Cuban leader Fidel Castro dies

Castro at the May Day commemoration of Revolution Square in Havana in 2004. He held tightly to his belief in a socialist economic model and one-party Communist rule, even after the Soviet Union's end and most of the rest of the world concluded state socialism was an idea whose time had passed.

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Castro, left, and his brother Raul attend a session of the Cuban parliament in July 2004.

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Castro speaks in Havana in February 2006.

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Castro in Havana in September 2002. Several surgeries forced him to relinquish his duties temporarily to younger brother Raul in July 2006.

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Photos:Former Cuban leader Fidel Castro dies

In footage from state-owned Cuban television, Venezuelan President Hugo Chavez visits an ailing Castro in September 2006. That July, it was announced that Castro was undergoing intestinal surgery. Castro resigned as President in February 2008, and his brother Raul took over permanently.

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Castro smiles before delivering a speech in Havana in September 2010. He had remained mostly out of sight after falling ill in 2006 but returned to the public light that year.

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Pope Benedict XVI meets with Castro in Havana in March 2012.

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In this picture provided by CubaDebate, Castro talks to Randy Perdomo, president of Cuba's University Students Federation, during a February meeting in Havana.

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Castro visits with 19 cheese masters on Friday, July 3, 2015, in a rare trip outside his Havana home.

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Leader of the Russian Orthodox Church, Patriarch Kirill, left, visits with Fidel Castro during a meeting at Castro's home on February 14, 2016.

"If Cuba is unwilling to make a better deal for the Cuban people, the Cuban/American people and the US as a whole, I will terminate deal," Trump tweeted on Sunday.

While Russia is sending a delegation to Cuba, Vladimir Putin, who met with Castro during his last visit to Cuba in 2015 and promised closer relations with the former USSR's close ally, is not scheduled to travel to the island.

There has been no explanation for Putin's absence, but it may well be that the Russian President is prioritizing the possibility of better relations with the incoming Trump administration over Russia's past ties with an old comrade.